The U.S. and Ukraine condemn Russia's revised nuclear doctrine, calling it irresponsible and a threat to global security.

Two U.S. officials also confirmed to ABC News that Ukraine had for the first time fired ATACMS at targets in Russia.

We all have to work to end the conflicts and crises,” President Biden said in his first public comments on the Ukraine-Russia ...

Russia is ready to carry out cyber attacks on the United Kingdom and other allies in a bid to weaken support for Ukraine, a ...

China warned the U.S. against actions that could escalate the Ukraine conflict following Biden's authorizing Ukraine's use of ATACMS missiles.

A special hotline in place to deflate crises between the Kremlin and the White House is not currently being used, the Kremlin ...

World leaders and analysts expressed doubts that the change to Russia's nuclear doctrine amounted to much more than a new and ...

The U.S. had a "robust conversation" with China this week about the North Korean troops' dispatch to Russia, Secretary of State Antony Blinken said after a joint news conference with Secretary of ...

U.S. and Polish officials have opened a new NATO missile defense base in northen Poland. Polish officials welcomed it as a ...

One is to enhance cooperation between South Korea and the United States ... During the press conference Thursday, Blinken and Austin said North Korea has sent 10,000 troops to Russia, where ...

The Biden administration announced Wednesday that it will give Ukraine antipersonnel mines to help it slow Russia’s ...